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Table 2

Comparison of augmentation methods by means of their task viability. x: Can be used for the task; o: Cannot be used for the task. Augmentations are generated on: “I wrote him a letter”.

  POSDEPSRLGenerated
Char Char Insert (CI) x x x I wrrotle him a legtter 
Char Substitute (CSU) x x x I wyote him a lettep 
Char Swap (CSW) x x x I wtore him a lteter 
Char Delete (CD) x x x I wote him a leter 
  
Token Synonym Replacement (SR) x x x I wrote him a message 
RW Delete (RWD) x o o I him a letter 
RW Swap (RWS) x o o I him wrote a letter 
RW Insert (RWI) o o o I wrote him a her letter 
  
Syntactic Crop x x x I wrote a letter 
Rotate x x x Him a letter I wrote 
Nonce x x o I wrote him a flower 
  POSDEPSRLGenerated
Char Char Insert (CI) x x x I wrrotle him a legtter 
Char Substitute (CSU) x x x I wyote him a lettep 
Char Swap (CSW) x x x I wtore him a lteter 
Char Delete (CD) x x x I wote him a leter 
  
Token Synonym Replacement (SR) x x x I wrote him a message 
RW Delete (RWD) x o o I him a letter 
RW Swap (RWS) x o o I him wrote a letter 
RW Insert (RWI) o o o I wrote him a her letter 
  
Syntactic Crop x x x I wrote a letter 
Rotate x x x Him a letter I wrote 
Nonce x x o I wrote him a flower 
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